GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 179855  Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Clean all dirt and foreign material from the brake hoses and brake pipe fitting.
  3. Important: Install a rubber cap or plug to the exposed brake pipe fitting ends in order to prevent brake fluid loss and contamination.

  4. Use a backup wrench on the hose fitting, disconnect the brake pipe fittings from the junction block, then cap or plug the brake pipe fitting ends.
  5. Do not bend the brake pipe or the bracket.


    Object Number: 161592  Size: SH
  6. Disconnect the brake pipe fitting (9).
  7. Remove the brake hose retaining clip (2).
  8. Remove the junction block bolt (5).
  9. Remove the rear brake hose (4).

Installation Procedure


    Object Number: 161592  Size: SH
  1. Install the rear brake hose (4).
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the junction block bolt (5).
  4. Tighten
    Tighten the junction block bolt to 17 N·m (13 lb ft).

  5. Install the brake hose retaining clip (2).
  6. Connect the brake pipe fitting (9).
  7. Tighten
    Tighten the brake pipe fitting to 17 N·m (13 lb ft).


    Object Number: 179855  Size: SH
  8. Loosely connect the rear brake pipe fittings to the junction block.
  9. Tighten
    Using a backup wrench, tighten the rear brake pipe fittings to 17 N·m (13 lb ft).

  10. Ensure that the hose does not make contact with any part of the suspension. If the hose makes contact, remove the hose and correct the condition.
  11. Bleed the hydraulic brake system. Refer to Hydraulic Brake System Bleeding .
  12. Lower the vehicle.